Insomnia is recognized as the most prevalent and "costly" sleep disorders and is associated with considerable morbidity including significantly reduced quality of life, impaired work performance, and increased risk for major depressive disorder.1-4 Insomnia is a key symptom of the menopausal transition. Cognitive-behavioral therapy for insomnia (CBT-I) yields equivalent short-term efficacy and superior long-term durability to pharmacological treatment of insomnia. The efficacy of cognitive behavioral therapy for insomnia comorbid with menopause will be tested.